TW202021199A - High-frequency antenna device and antenna array thereof - Google Patents

Abstract

The present disclosure discloses a high-frequency antenna device and an antenna array thereof. The antenna array includes a plurality of sub-arrays spaced apart from each other and each having the same layout. Each of the sub-arrays includes a plurality of antennas arranged in rows. Centers of two of the antennas of each of the sub-arrays arranged adjacent to each other have a first interval therebetween, and centers of two of antennas that are respectively arranged on two different sub-arrays and are arranged adjacent to each other have a second interval therebetween that is equal to the first interval. The antenna array is operatable in at least one of operation modes. The operation modes includes a first mode, in which any one of the sub-arrays is wirelessly communicated with an external electronic device that is spaced apart therefrom by less than a first distance; and a second mode: in which at least two of the sub-arrays adjacent to each other are cooperated to wirelessly communicate with an external electronic device that is spaced apart therefrom by less than a second distance, and the first distance is less than the second distance.

Description

High-frequency antenna device and its antenna array

The invention relates to a high-frequency antenna, in particular to a high-frequency antenna device suitable for 20 GHz to 45 GHz and its antenna array.

The existing high-frequency antenna is applied to the fourth-generation mobile communication system (4G) standard, so the structural design of the existing high-frequency antenna is only applicable to non-millimeter wave frequency bands (such as: 2.6GHz), thus making it difficult to apply the existing high-frequency antenna In higher frequency band (such as: 20GHz~45GHz) or millimeter wave frequency band. However, the increase in operating frequency has become the future communication trend, so how to improve the existing high-frequency antenna or construct a new high-frequency antenna to meet the design requirements has already been a technical problem that needs to be faced in the field.

Therefore, the inventor believes that the above-mentioned defects can be improved, and Naite devotes himself to research and cooperates with the application of scientific principles, and finally proposes a reasonable design and effectively improves the above-mentioned defects of the present invention.

An embodiment of the present invention is to provide a high-frequency antenna device and an antenna array thereof, which can effectively improve defects that may be caused by the existing high-frequency antenna.

An embodiment of the present invention discloses a high-frequency antenna device suitable for an operating frequency band between 20 GHz and 45 GHz. The high-frequency antenna device includes: a substrate including a first panel and a second on opposite sides An antenna array, disposed on the first surface of the substrate, and the antenna array includes a plurality of sub-arrays arranged at intervals; wherein, each sub-array includes a plurality of antennas arranged in multiple columns, and And the arrangement and layout of the plurality of sub-arrays are the same; wherein, the center points of any two adjacent antennas in any one of the sub-arrays are separated by a first pitch, and are adjacent but belong to different sub-arrays The center points of the two antennas are separated by a second pitch equal to the first pitch; and a plurality of processing wafers are mounted on the second board surface of the substrate, and the plurality of processing wafers are respectively Electrically coupled to the plurality of sub-arrays, so that each processing chip is electrically coupled to the plurality of antennas corresponding to the sub-arrays; wherein, the antenna array includes a plurality of operation modes , And the antenna array can operate in at least one of a plurality of the operation modes, the plurality of operation modes include: a first mode: any one of the sub-arrays is within a first distance An external electronic device performs wireless signal transmission; and a second mode: two adjacent sub-arrays cooperate with each other to perform wireless signal transmission with an external electronic device within a second distance; wherein, the first The distance is smaller than the second distance.

The embodiment of the present invention also discloses an antenna array of a high-frequency antenna device, which is suitable for an operating frequency band between 20 GHz and 45 GHz. The antenna array includes: a plurality of sub-arrays, which are arranged at intervals, and each of the sub-arrays includes A plurality of antennas arranged in multiple columns, and the arrangement and layout of the plurality of sub-arrays are the same; wherein, the center points of any two adjacent antennas in any one of the sub-arrays are separated by a first pitch, and The center points of two adjacent antennas that belong to different sub-arrays have a second interval equal to the first interval; wherein, the antenna array includes multiple operating modes, and the antenna array It can operate in at least one of a plurality of the operation modes. The plurality of operation modes include: a first mode: any one of the sub-arrays is wirelessly connected to an external electronic device within a first distance Signal transmission; and a second mode: at least two adjacent sub-arrays cooperate with each other to perform wireless signal transmission with an external electronic device within a second distance; wherein the first distance is less than the first Two distances.

In summary, the high-frequency antenna device and the antenna array disclosed in the embodiments of the present invention include multiple operation modes, and the antenna array can operate in the above multiple operation modes At least one of them to operate, so that the antenna array of the high-frequency antenna device can select and execute at least one of the plurality of operation modes according to the position and number of external electronic devices, so that the high-frequency antenna device can Effectively achieve better operating efficiency.

In order to understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention, but these descriptions and drawings are only used to illustrate the present invention, not to make any protection to the scope of the present invention. limit.

100‧‧‧High-frequency antenna device

1‧‧‧ substrate

11‧‧‧ First board

12‧‧‧Second board

2‧‧‧ Antenna array

20‧‧‧Sub-array

21‧‧‧ Antenna

211‧‧‧ Center point

212‧‧‧ feed point of horizontal polarization

213‧‧‧Vertical polarization feed point

3‧‧‧Processing chip

4‧‧‧Connector

5‧‧‧Frequency down chip

S1‧‧‧ First pitch

S2‧‧‧Second pitch

D1‧‧‧ First distance

D2‧‧‧Second distance

D3‧‧‧ Third distance

200, 200a, 200b ‧‧‧ external electronic device (eg mobile phone)

FIG. 1 is a functional block diagram of a high-frequency antenna device according to Embodiment 1 of the present invention.

2 is a schematic perspective view of a high-frequency antenna device according to Embodiment 1 of the present invention.

FIG. 3 is another perspective schematic view of the high-frequency antenna device according to Embodiment 1 of the present invention.

4 is a schematic perspective view of the high-frequency antenna device of FIG. 1 when the antenna array is arranged in a straight line.

FIG. 5 is a schematic perspective view of the high-frequency antenna device of FIG. 1 when the antenna array is staggered.

6 is a schematic perspective view of the high-frequency antenna device of FIG. 1 when the antenna is rectangular.

7 is a schematic perspective view of the high-frequency antenna device of FIG. 1 when the antenna has a circular shape.

8 is a schematic diagram of the antenna array of the high-frequency antenna device of FIG. 2 operating in the first mode.

9 is a schematic diagram of the operation of the antenna array of the high-frequency antenna device of FIG. 2 in the first mode and the second mode.

10 is a schematic diagram of the antenna array of the high-frequency antenna device of FIG. 2 operating in the third mode.

11 is a functional block diagram of a high-frequency antenna device according to Embodiment 2 of the present invention.

FIG. 12 is a schematic perspective view of a high-frequency antenna device according to Embodiment 2 of the present invention.

13 is a functional block diagram of a high-frequency antenna device according to Embodiment 3 of the present invention.

14 is a schematic perspective view of a high-frequency antenna device according to Embodiment 3 of the present invention.

Please refer to FIG. 1 to FIG. 14, which is an embodiment of the present invention. It should be noted that this embodiment corresponds to the relevant quantity and appearance mentioned in the drawings, and is only used to specifically illustrate the implementation of the present invention. In order to facilitate understanding of the content of the present invention, rather than to limit the scope of protection of the present invention.

[Example 1]

As shown in FIGS. 1 to 10, it is Embodiment 1 of the present invention. This embodiment is a high-frequency antenna device 100, which is suitable for an operating frequency band between 20 GHz and 45 GHz. That is to say, the high-frequency antenna device 100 of this embodiment excludes any antenna device that is not applied to 20 GHz to 45 GHz. In this embodiment, the operating frequency band is further limited to one of the frequency bands between 24 GHz to 26.5 GHz, 26.5 GHz to 28.5 GHz, 37 GHz to 40 GHz, and 40 GHz to 43.5 GHz, but the present invention is not limited thereto.

As shown in FIG. 1, the high-frequency antenna device 100 includes a substrate 1, an antenna array 2 disposed on opposite sides of the substrate 1, a plurality of processing chips 3, and a plurality of connections mounted on the substrate 1器4. In this embodiment, the antenna array 2 is described with the above components, but the present invention is not limited to this. For example, in other embodiments not shown in the present invention, the antenna array 2 can also be used alone or in combination with other components.

The substrate 1 includes a first board surface 11 and a second board surface 12 on opposite sides. In this embodiment, the board 1 is illustrated by a rectangular printed circuit board, but the present invention does not Limited by this.

As shown in FIGS. 2 and 3, the antenna array 2 is disposed on the first board surface 11 of the above-mentioned substrate 1, and the antenna array 2 is used to transmit millimeter wave signals in this embodiment. Wherein, the antenna array 2 includes a plurality of sub-arrays 20 arranged at intervals, Each sub-array 20 includes a plurality of antennas 21 arranged in multiple columns, and the arrangement and layout of the plurality of sub-arrays 20 are the same.

It should be noted that the number of the sub-arrays 20 is illustrated by four in FIG. 2 of this embodiment, but the present invention is not limited to this. For example, in other embodiments not shown in the present invention, the number of the plurality of sub-arrays 20 of the antenna array 2 may be two or more than three.

Furthermore, the arrangement of the multiple sub-arrays 20 of the antenna array 2 can be adjusted and changed according to design requirements. For example, as shown in FIG. 4, the plurality of sub-arrays 20 may be arranged in a row; or, as shown in FIGS. 2 and 5, the plurality of sub-arrays 20 may form a matrix arrangement.

As shown in FIG. 2, the multiple antennas 21 of the antenna array 2 are arranged in M columns and N rows, and M and N are both positive integers greater than 1, so that the multiple antennas 21 form a matrix arrangement. Or, as shown in FIG. 5, the multiple antennas 21 of the antenna array 2 are arranged in M columns, where M is a positive integer greater than 1, and the multiple antennas 21 of each column are adjacent to the multiple antennas 21 of another column Set in a staggered arrangement.

In more detail, the number of antennas 21 of the antenna array 2 is illustrated by 16 in FIG. 2, but the number of antennas 21 can also be adjusted and changed according to design requirements. Furthermore, the appearances of the multiple antennas 21 are approximately the same, and each antenna 21 may be a square (eg, FIG. 2), a rectangle (eg: FIG. 6), or a circle (eg: Figure 7), but the invention is not limited to this. Furthermore, in the present embodiment, each antenna 21 is described as a single polarized metal sheet capable of horizontal polarization or vertical polarization, but the invention is not limited thereto.

As shown in FIG. 2, the center points 211 of any two adjacent antennas 21 in any sub-array 20 are separated by a first pitch S1, and the centers of two antennas 21 that are adjacent but belong to different sub-arrays 20 The point 211 has a second interval S2 equal to the first interval S1, so as to facilitate the operation of the second mode and the third mode of the antenna array 2 in the following description. It should be noted that the center point 211 corresponds to the intersection of two diagonal lines of the antenna 21 in FIG. 2 in this embodiment.

In addition, a center frequency of the operating frequency band corresponds to a wavelength; that is, the wavelength corresponds to the reciprocal of the above center frequency. In this embodiment, the first pitch S1 (or the second pitch S2) is between 0.25 to 0.75 times the wavelength. Wherein, the first interval S1 (or the second interval S2) is preferably between 0.35 and 0.65 times the wavelength (for example: 0.5 times the wavelength), but the invention is not limited thereto.

As shown in FIGS. 2 and 3, a plurality of processing wafers 3 are mounted on the second board surface 12 of the above-mentioned substrate 1, and the plurality of processing wafers 3 are electrically coupled to the plurality of sub-arrays 20 respectively, so that each processing wafer 3 A plurality of antennas 21 corresponding to the sub-array 20 are electrically coupled. Furthermore, in this embodiment, the number of the plurality of processing wafers 3 is equal to the number of the above-mentioned plurality of sub-arrays 20, so that each sub-array 20 can be independently controlled by the corresponding one of the processing wafers 3, but the present invention Not limited to this.

In other words, the processing wafer 3 of this embodiment is soldered to the substrate 1 and electrically connected to the plurality of antennas 21 corresponding to the sub-array 20 through conductive lines (not shown) formed on the substrate 1. According to this, each processing wafer 3 can control the phase and amplitude of the signal transmitted or received by the corresponding sub-array 20.

The plurality of connectors 4 are mounted on the above-mentioned substrate 1, and in the present embodiment, each of the connectors 4 is mounted on the periphery of the substrate 1. Wherein, the plurality of connectors 4 are respectively electrically coupled to the plurality of processing chips 3. Furthermore, since each antenna 21 in the array 20 of this embodiment operates in a single polarization, the number of multiple connectors 4 is equal to the number of multiple sub-arrays 20 in this embodiment. To put it another way, the plurality of connectors 4 of this embodiment are connected to the plurality of processing wafers 3 through conductive wires formed on the substrate 1, and each connector 4 is electrically connected to the corresponding processing wafer 3.性coupled to each antenna 21.

As mentioned above, the antenna array 2 includes multiple operating modes in the architecture of the high-frequency antenna device 100 of this embodiment, and the multiple operating modes described above are implemented in this embodiment The example includes a first mode, a second mode, and a third mode, but the invention is not limited thereto. Wherein, the antenna array 2 can be operated in at least one of the above-mentioned multiple operation modes; that is to say, the antenna array 2 can also execute two different operation modes simultaneously (such as the antenna array 2 in FIG. 9) Perform the first mode and the second mode synchronously).

In the first mode: as shown in FIG. 8, any sub-array 20 performs wireless signal transmission with an external electronic device 200 (such as a mobile phone) within a first distance D1. In other words, when all the sub-arrays 20 of the antenna array 2 perform wireless signal transmission with multiple external electronic devices 200, the high-frequency antenna device 100 can synchronize and equal the number of multiple external electrons of the sub-array 20 The device 200 performs wireless signal transmission.

The second mode: as shown in FIG. 9, at least two adjacent sub-arrays 20 (such as the upper two sub-arrays 20 in FIG. 9) cooperate with each other to cooperate with an external electron within a second distance D2 The device 200a (such as a mobile phone) performs wireless signal transmission, and the first distance D1 is smaller than the second distance D2. In other words, when the distance between the external electronic device 200a and the high-frequency antenna device 100 is between the first distance D1 and the second distance D2, the antenna array 2 can cooperate with each other by at least two adjacent sub-arrays 20 Wireless signal transmission is performed with the external electronic device 200a.

The third mode: as shown in FIG. 10, all the sub-arrays 20 cooperate with each other to perform wireless signal transmission with an external electronic device 200b within a third distance D3, and the second distance D2 is less than the third Distance D3. That is to say, when the distance between the external electronic device 200b and the high-frequency antenna device 100 is between the second distance D2 and the third distance D3, the antenna array 2 can cooperate with all the sub-arrays 20 The electronic device 200b performs wireless signal transmission.

As described above, the antenna array 2 of the high-frequency antenna device 100 of this embodiment can select and execute at least one of the plurality of operation modes according to the positions and numbers of the external electronic devices 200, 200a, and 200b, so that the high-frequency The antenna device 100 can effectively achieve better operating efficiency.

[Example 2]

As shown in FIGS. 11 and 12, it is the second embodiment of the present invention. This embodiment is similar to the above-mentioned first embodiment, so the similarities of the two embodiments will not be repeated, and the differences between the two embodiments The general description is as follows: In this embodiment, each antenna 21 is a dual-polarized metal sheet capable of horizontal polarization and vertical polarization. Each antenna 21 preferably defines a horizontally polarized feed point 212 and a vertically polarized feed point 213. In each antenna 21, the horizontally polarized feed point 212 and the vertically polarized feed point 213 form a right angle with respect to the center point 211.

Furthermore, since each antenna 21 of the sub-array 20 in this embodiment is dual-polarized, the number of the plurality of connectors 4 is twice that of the plurality of sub-arrays 20 in this embodiment, and each Each processing chip 3 is electrically coupled to the two connectors 4.

[Embodiment 3]

As shown in FIG. 13 and FIG. 14, it is the third embodiment of the present invention. This embodiment is similar to the above-mentioned second embodiment, so the similarities between the two embodiments will not be repeated, and the differences between the two embodiments The general description is as follows: In this embodiment, the high-frequency antenna device 100 further includes a plurality of down-conversion chips 5, and since each antenna 21 of the sub-array 20 in this embodiment is dual-polarized, so The number of the plurality of down-converted chips 5 is twice that of the plurality of sub-arrays 20.

Wherein, any two down-converting chips 5 are electrically coupled to the corresponding sub-array 20 through one processing chip 3, and are electrically coupled to the two connectors 4 respectively. In other words, the plurality of down-converted wafers 5 are mounted on the conductive lines that electrically connect the plurality of connectors 4 to the plurality of processing wafers 3, so that the transmission between each connector 4 and the processing wafer 3 The signals of all must go through a corresponding down-conversion chip 5 Frequency processing. In other words, one of the processing chips 3 is electrically coupled to the two connectors 4 through the corresponding two down-converting chips 5.

Furthermore, any two of the down-converting chips 5 electrically correspond to the horizontal polarization and the vertical polarization of each of the antennas 21 corresponding to the sub-array 20 respectively.

In more detail, each of the down-conversion chips 5 can down-convert a high-frequency signal from the corresponding processing chip 3 between 20 GHz and 45 GHz to a down-conversion signal between 2 GHz and 6 GHz, and each connection The transmitter 4 is used to transmit the frequency-down signal from the corresponding frequency-down chip 5. According to this, the high-frequency antenna device 100 of this embodiment can use the connector 4 with lower specification requirements (such as the connector 4 applied to the standard of the fourth-generation mobile communication system), so as to effectively reduce the production cost, and thus facilitate the promotion of the above High frequency antenna device 100.

[Technical Effects of Embodiments of the Invention]

In summary, the high-frequency antenna device and the antenna array disclosed in the embodiments of the present invention include multiple operating modes, and the antenna array can operate in at least one of the multiple operating modes described above, so that the The antenna array of the high-frequency antenna device can select and execute at least one of the plurality of operation modes according to the position and number of external electronic devices, so that the high-frequency antenna device can effectively achieve better operation efficiency.

Furthermore, the high-frequency antenna device and the antenna array disclosed in the embodiments of the present invention are arranged and designed by multiple antennas (for example, each antenna can be horizontally and vertically polarized, and any two adjacent antennas) There is a specific value for the center point interval), which can be used in the operating frequency band (or millimeter wave frequency band) of 20GHz~45GHz, and has better transmission performance.

In addition, the high-frequency antenna device disclosed in the embodiment of the present invention is provided with a down-conversion chip, and each connector needs to be electrically coupled to the processing chip through a corresponding down-conversion chip, so that each connector can Used to transmit the down-converted signal from the corresponding down-converter chip number. According to this, the high-frequency antenna device can use a connector with lower specification requirements, so as to effectively reduce the production cost, and further facilitate the promotion of the above-mentioned high-frequency antenna device.

The above are only preferred and feasible embodiments of the present invention, and are not intended to limit the scope of protection of the present invention. Any changes and modifications made in accordance with the patent scope of the present invention shall fall within the scope of protection of the claims of the present invention.

100‧‧‧High-frequency antenna device

1‧‧‧ substrate

11‧‧‧ First board

12‧‧‧Second board

2‧‧‧ Antenna array

20‧‧‧Sub-array

21‧‧‧ Antenna

4‧‧‧Connector

Claims (10)

A high-frequency antenna device is suitable for an operating frequency band between 20 GHz and 45 GHz. The high-frequency antenna device includes: a substrate including a first board surface and a second board surface on opposite sides; an antenna An array is provided on the first surface of the substrate, and the antenna array includes a plurality of sub-arrays arranged at intervals; wherein each sub-array includes a plurality of antennas arranged in multiple columns, and a plurality of the The arrangement and layout of the sub-arrays are the same; wherein, the center points of any two adjacent antennas in any one of the sub-arrays are separated by a first pitch, and the two adjacent antennas that are adjacent but belong to different sub-arrays The center point is separated by a second pitch equal to the first pitch; and a plurality of processing wafers are mounted on the second plate surface of the substrate, and the plurality of processing wafers are respectively electrically coupled to A plurality of the sub-arrays, so that each processing chip is electrically coupled to a plurality of the antennas corresponding to the sub-arrays; wherein the antenna array includes a plurality of operation modes, and the antennas The array can be operated in at least one of the plurality of operation modes. The plurality of operation modes include: a first mode: any one of the sub-arrays and an external electronic device within a first distance Wireless signal transmission; and a second mode: two adjacent sub-arrays cooperate with each other to perform wireless signal transmission with an external electronic device within a second distance; wherein the first distance is smaller than the first Two distances. The high-frequency antenna device according to claim 1, wherein a plurality of the sub-arrays of the antenna array are arranged in a row or constitute a matrix arrangement. The high-frequency antenna device according to claim 1, wherein the number of the plurality of sub-arrays of the antenna array is more than three, and the plurality of operation modes further includes a third mode: all of the sub-arrays The arrays cooperate with each other to perform wireless signal transmission with an external electronic device within a third distance, the second The distance is smaller than the third distance. The high-frequency antenna device according to claim 1, wherein each of the antennas is a dual-polarized metal sheet capable of horizontal polarization and vertical polarization. The high-frequency antenna device according to claim 4, wherein each of the antennas defines a horizontally polarized feed point and a vertically polarized feed point; in each of the antennas, the horizontally polarized feed The input point and the vertical polarization feed point form a right angle with respect to the center point. The high-frequency antenna device according to claim 4, wherein a plurality of the antennas of the antenna array are arranged in M columns and N rows, and both M and N are positive integers greater than 1, so that the plurality of the antennas The antennas are arranged in a matrix. The high-frequency antenna device according to claim 4, wherein the plurality of antennas of the antenna array are arranged in M columns, M is a positive integer greater than 1, and the plurality of antennas in each column are adjacent to The plurality of antennas in another column are arranged in a staggered arrangement. The high-frequency antenna device according to claim 4, wherein the number of the plurality of processing wafers is equal to the number of the plurality of sub-arrays, the high-frequency antenna device includes a plurality of down-conversion chips, and a plurality of The number of the down-converted wafers is twice the number of the plurality of sub-arrays; wherein any two of the down-converted wafers are electrically coupled to the corresponding sub-arrays through one processing wafer, and Any two of the down-converting chips electrically correspond to the horizontal polarization and the vertical polarization of each of the antennas corresponding to the sub-array, and each of the down-converting chips can A high-frequency signal from 20 GHz to 45 GHz corresponding to the processing chip is down-converted to a down-converted signal between 2 GHz and 6 GHz. An antenna array of a high-frequency antenna device is suitable for an operating frequency band between 20 GHz and 45 GHz. The antenna array includes: a plurality of sub-arrays, which are arranged at intervals, and each of the sub-arrays includes a plurality of Antennas, and the arrangement and layout of a plurality of the sub-arrays are the same; wherein, the center points of any two adjacent antennas in any one of the sub-arrays are separated by a first pitch, and are adjacent but different The center points of the two antennas of the sub-array are spaced equal to the first pitch A second pitch; wherein, the antenna array includes multiple operating modes, and the antenna array can operate in at least one of the multiple operating modes, the multiple operating modes include: a The first mode: any one of the sub-arrays performs wireless signal transmission with an external electronic device within a first distance; and a second mode: at least two adjacent sub-arrays cooperate with each other to jointly An external electronic device within two distances performs wireless signal transmission; wherein the first distance is less than the second distance. The antenna array of the high-frequency antenna device according to claim 9, wherein the number of the plurality of sub-arrays of the antenna array is more than three, and the plurality of operation modes further includes a third mode: all The sub-arrays cooperate with each other to perform wireless signal transmission with an external electronic device within a third distance, and the second distance is smaller than the third distance.

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